<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class AdminIdentity extends CUserIdentity
{
    private $_id;
    public $admin;
    public $username;

	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */

    public function authenticate(){
        $record=User::model()->findByAttributes(array('username'=>$this->username));
        if($record===null){
        	//用户名不存在
            $this->errorCode=self::ERROR_USERNAME_INVALID;
        }else if($record->password!==$this->md5Hash($this->password)){
        	//密码错误
            $this->errorCode=self::ERROR_PASSWORD_INVALID;  
        }else{
            $this->_id=$record->id;
            $this->setState('roles',$record->role->name);
            $this->errorCode=self::ERROR_NONE;
        }
        return !$this->errorCode;
    }

    public function getId(){
        return $this->_id;
    }

    public function getUser(){
    	return $this->admin;
    }

    public function getUserName(){
    	return $this->username;
    }

    public function setUser(CActiveRecord $user){
    	$this->admin=$user->attributes;
    }

    /**
     * 加密
     */
    static public function md5Hash($password){
        return md5($password);
    }
}